#include<bits/stdc++.h>
using namespace std;
int n;
int v,ans;
map<int,int> m;
int main()
{
    freopen("duel.in","r",stdin);
    freopen("duel.out","w",stdout);
    cin>>n;
    for(int i=0;i<n;i++)
    {
        cin>>v;
        m[v]++;
    }
    for(auto i:m)
    {
        ans=max(ans,i.second);
    }
    cout<<ans;
    return 0;
}
